Skip to content

Bluelab Guardian Monitor pH & Ec


Simple yet Effective Monitor for Your Plants

The Bluelab Guardian Monitor provides simple yet powerful crop management services and will give continual readings for the pH, conductivity (EC/ppm 700/TDS/CF) and temperature within your nutrient solution. Designed for use in a variety of set-ups, the Guardian Monitor is easily integrated into your system and can be wall mounted or hung separately.

Simply place the monitor probe into your solution for a fast and accurate reading. You can set the alarm as desired, for instance if the solution deviates from your ideal. You can then tweak

the nutrient solution as desired to achieve the best possible growth results.


  • Green plant-safe LEDs
  • Easy to read, large display
  • No calibration necessary
  • Selectable conductivity and temperature values
  • Flashing alarms for low and high
  • Greater RF tolerance
  • Water resistant design
  • International power supply included with unit
  • Replaceable double junction pH probe
  • Adjustable display brightness